Angles and Lines

Front

What is an angle that is less than 90°?

Back

Acute angle

Front

What do we call lines that never meet and are always the same distance apart?

Back

Parallel Lines

Front

What do we call lines that cross each other at a right angle?

Back

Perpendicular Lines

Front

What type of angle measures exactly 90°?

Back

Right angle

Front

What is an angle that is more than 90° but less than 180°?

Back

Obtuse angle

Front

What do we call an angle that measures exactly 180°?

Back

Straight angle

Front

If two lines intersect and form four right angles, what type of lines are they?

Back

Perpendicular Lines

Front

What is the sum of angles in a triangle?

Back

180°

Front

What type of angle is formed when two lines meet at a point and create angles less than 90°?

Back

Acute angles

Front

What do we call the point where two lines meet?

Back

Vertex